 /*******************************************************************************
  * Copyright (c) 2000, 2005 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/

 package org.eclipse.core.resources;

 import java.util.EventListener ;

 /**
  * An interface to be implemented by objects interested in path variable
  * creation, removal and value change events.
  *
  * <p>Clients may implement this interface.</p>
  *
  * @since 2.1
  */
 public interface IPathVariableChangeListener extends EventListener {
     /**
      * Notification that a path variable has changed.
      * <p>
      * This method is called when a path variable is added, removed or has its value
      * changed in the observed <code>IPathVariableManager</code> object.
      * </p>
      *
      * @param event the path variable change event object describing which variable
      * changed and how
      * @see IPathVariableManager#addChangeListener(IPathVariableChangeListener)
      * @see IPathVariableManager#removeChangeListener(IPathVariableChangeListener)
      * @see IPathVariableChangeEvent
      */
     public void pathVariableChanged(IPathVariableChangeEvent event);

 }

